<html>

<style>
 *{
		margin:0;
		padding:0;
 
 }
 .btn {
	height:40px;
	background-color:#FFF;
	border:1px solid red;
	display:flex;
	justify:center;
	align-items:center;
 }
 
 #ipt {
	height:38px;
	border:none;
	
	outline:medium;
	background-color:#FFF;
	padding-left:10px;
 }
</style>
<body>
<button class="btn" type="button">
 aaa图标
 <input type="text" placeholder="837kdj" id="ipt">
  <i>图标2</i>|<i>搜索</i>
</button>
</body>
</html>